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All-optical switch and transistor based on coherent light-controlled single two-level atom coupling with two nanowires

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Chinese Physics B 2019年第11期28卷 179-185页

作者： Xin-Qin Zhang Xiu-Wen Xia Jing-Ping Xu mu-tian Cheng Ya-Ping Yang Institute of Atomic and Molecular Physics and Functional Materials School of Mathematics and PhysicsJinggangshan UniversityJi’an 343009China MOE Key Laboratory of Advanced Micro-structure Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Electrical Engineering&Information Anhui University of TechnologyMaanshan 243002China

Atom–nanowire coupling system is a promising platform for optical quantum information processing. Unlike the previous designing of optical switch and transistor requiring a dedicated multi-level emitter and high fineness microcavity,a new proposal is put forward which contains a single two-level atom asymmetrically coupled with two nanowires. Singleemitter manipulation of photonic signals for bilateral coherent incident is clear now, since we specify atomic saturation nonlinearity into three contributions which brings us a new approach to realizing light-controlled-light at weak light and single-atom levels. An efficient optically controllable switch based on self-matching-induced-block and a concise optical transistor are proposed. Our findings show potential applications in full-optical devices.

关键词： optical transistor optical switch nano-waveguide light-controlled-light

Coherent Controlling Single Photon Asymmetric Transmission in the Atom Chirally Coupled Waveguide System

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Communications in Theoretical Physics 2019年第11期71卷 1304-1308页

作者： Wei Hu Xiao-San Ma Bing Wang Xian-Shan Huang mu-tian Cheng School of Electrical Engineering and Information Anhui University of TechnologyMaanshan 243002China Anhui Provincial Key Laboratory of Power Electronics and Motion Control Anhui University of TechnologyMaanshan 243002China School of Mathematics and Physics Anhui University of TechnologyMaanshan 243002China

We theoretically investigate the influences of two coherent driving fields on the asymmetric transmission of single photon in the atom-waveguide *** atom is considered as a A *** transition of the atom chirally couples to the *** other transition is driven by two coherent driving *** transmission probabilities for the single photon incidents from the left(T_(lr)) and right(Tlr) are given *** calculated results show that one can realize Tlr=0(Tlr≠0) or Tlr=0(Tlr≠0) by manipulating the phase difference between the two coherent driving *** influence of the decay rate of the metastable state on the asymmetric transmission is also discussed.

关键词： single photon diode waveguide chiral coupling

Fano interference and transparency in a waveguide-nanocavity hybrid system with an auxiliary cavity

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Chinese Physics B 2021年第10期30卷 318-322页

作者： Yu-Xin Shu Xiao-San Ma Xian-Shan Huang mu-tian Cheng Jun-Bo Han School of Electrical Engineering&Information Anhui University of TechnologyMaanshan 243002China School of Mathematics and Physics Anhui University of TechnologyMaanshan 243002China Wuhan National High Magnetic Field Center and Department of Physics Huazhong University of Science and TechnologyWuhan 430074China

We investigate theoretically single photon transport in one-dimensional waveguide coupled to a pair of cavities,which are denoted by the first cavity and the auxiliary *** cases with no atom and one atom embedded in the first cavity are *** Fano dips in the transmission spectrum and locations of transparency window are *** no atom is embedded in the first cavity,there exists a transparency window under the condition that the first cavity and the auxiliary cavity are not *** locations of the transparency window and Fano line type depend strongly on the eigen frequency of the auxiliary cavity and the coupling strength between the auxiliary cavity and the *** one atom is embedded in the first cavity,we show that the transparency window exists even though the first cavity,the atom and the auxiliary cavity are *** Fano line type is strongly dependent on the eigen frequency of the auxiliary cavity and the coupling *** results have potential applications in design of quantum devices at the level of single photon,such as single photon switch and single photon routers.

关键词： Fano interference waveguide quantum electrodynamics auxiliary cavity

Nonreciprocal Single Photon Frequency Conversion via Chiral Coupling between a V-Type System and a Pair of Waveguides

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Chinese Physics Letters 2018年第5期35卷 34-38页

作者： Ce Shi mu-tian Cheng Xiao-San Ma Dong Wang Xianshan Huang Bing Wang Jia-Yan Zhang School of Electrical Engineering and Information Anhui University of TechnologyMaanshan 243002 School of Mathematics and Physics Anhui University of TechnologyMaanshan 243002 Anhui Provincial Key Lab of Power Electronics ＆ Motion Control Anhui University of TechnologyMaanshan 243002

The single photon frequency conversion is investigated theoretically in the system composed of a V-type system chiral coupling to a pair of waveguides. The single photon scattering amplitudes are obtained using the real-space Hamiltonian. The calculated results show that the probability of single photon frequency down-or up-conversion can reach a unit by choosing appropriate parameters in the non-dissipative system with perfect chiral *** present a nonreciprocal single photon beam splitter whose frequency of the output photon is different from that of the input photon. The influences of dissipations and non-perfect chiral coupling on the single frequency conversion are also shown. Our results may be useful in designing quantum devices at the single-photon level.

关键词： Nonreciprocal Single Photon Frequency Conversion via Chiral Coupling between a V-Type System and a Pair of Waveguides

Reply to the Comment on "Cryptanalysis and Improvement of a Quantum Network System of QSS-QDC Using χ-Type Entangled States" [Chin. Phys. Lett. 29 (2012) 110305]

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Chinese Physics Letters 2013年第7期30卷 261-261页

作者： GAO Gan FANG Ming CHENG mu-tian Department of Electrical Engineering Tongling UniversityTongling 244000 Jiang Huai College Anhui UniversityHefei 230031 School of Electrical Engineering and Information Anhui University of TechnologyMaanshan 243002

We first make a small modification to the improved protocol in order to enhance its ***,the explanation that our improved protocol can prevent Trent from using the{|Ψ^(±)/_(2)>,|Φ^(±)/_(2)>}basis is given.

关键词： explanation angled

Polarization Conversion of Single Photon via Scattering by a Λ System in a Semi-Infinite Waveguide

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Chinese Physics Letters 2019年第5期36卷 27-30页

作者： Fu-Qiang Yu mu-tian Cheng Shao-Ming Li Xiao-San Ma Zhi-Feng Zhu Xian-Shan Huang Anhui Provincial Key Lab of Power Electronics and Motion Control Anhui University of TechnologyMaanshan 243002 School of Electrical Engineering and Information Anhui University of TechnologyMaanshan 243002 School of Mathematics and Physics Anhui University of TechnologyMaanshan 243002

We theoretically investigate single-photon polarization conversion via scattering by an atom with Λ configuration coupled to a semi-infinite waveguide and discuss the two cases in which the Λ system is non-degenerated and degenerated. By applying the hard-wall boundary condition of the semi-infinite waveguide, it is found that singlephoton polarization conversion can be realized with unit probability for both cases under the ideal *** with the polarization conversion, the frequency conversion of a single photon can also be realized with unit probability in the ideal case if the Λ system is not degenerated.

关键词： Polarization Conversion Single Photon via Scattering

Syntheses, Crystal Structures, and Electrochemical Properties of Dehydroabietic Acid-based Schiff Bases

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Chinese Journal of Structural Chemistry 2020年第9期39卷 1699-1706,1557页

作者： CAI Xu-Min CHEN Xin-Fei mu tian-Qi LIN Yu-Ting HUANG Shen-Lin YAO Min-Xia College of Chemical Engineering Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest BiomassJiangsu Key Lab of Biomass-based Green Fuels and ChemicalsNanjing Forestry UniversityNanjing 210037China School of Chemistry and Molecular Engineering Nanjing Tech UniversityNanjing 211816China

Two Schiff bases(DAMBA-Fc and DAA-Fc)derived from dehydroabietic acid have been successfully synthesized and characterized by means of FT-IR,elemental analysis,HRMS,and NMR *** crystal structure of DAA-Fc can be determined by single-crystal X-ray *** compound is of monoclinic system,space group P21 with a=10.7379(6),b=7.5004(4),c=33.3294(18)?,β=97.996(3)o,Z=4,V=2658.2(3)?3,Mr=481.48,Dc=1.203 g/cm3,S=1.034,μ=0.585 mm-1,F(000)=1032,the final R=0.0566 and wR=0.0701 for 5645 observed reflections(I>2σ(I)).In addition,cyclic and differential pulse voltammogram techniques have been applied to differentiate the redox properties of the aromatic-and aliphatic-connected Schiff bases DAMBA-Fc and DAA-Fc,respectively.

关键词： dehydroabietic acid ferrocene Schiff base crystal structure electrochemical properties

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比较文化、比较哲学和比较科学哲学

自然辩证法研究 2007年第1期23卷 89-94页

作者：孙慕天哈尔滨师范大学远东科技与社会发展研究所黑龙江哈尔滨150080

比较文化研究源远流长,近代特别是现代全球化的进程促进了比较研究的发展,但西方中心主义作为主流话语却限制了比较文化研究。比较哲学是比较文化的一个方面,大致包括四个方向:哲学主题的比较,哲学思想发生和演变的语境比较,哲学的民族... 详细信息

比较文化研究源远流长,近代特别是现代全球化的进程促进了比较研究的发展,但西方中心主义作为主流话语却限制了比较文化研究。比较哲学是比较文化的一个方面,大致包括四个方向:哲学主题的比较,哲学思想发生和演变的语境比较,哲学的民族性比较以及通过比较揭示思想活动的规律以启示未来。西方科学哲学广泛采用比较研究方法,但基本上仅限于哲学主题的比较。作者以西方和俄(苏)科学哲学的比较为例,说明建构全面的比较科学哲学是一项重要的任务。

关键词：比较研究文化哲学科学哲学

论科学动力学的两种趋同——西方和俄(苏)科学哲学的一个比较

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自然辩证法通讯 2007年第3期29卷 16-22页

作者：孙慕天哈尔滨师范大学黑龙江哈尔滨150025

在科学动力学研究中,有两种趋同:一个是在上世纪中叶,西方科学哲学界对科学哲学的本性是科学动力学这一点有了普遍的认同,而俄(苏)自然科学哲学研究也几乎同步地发生了向科学动力学的重心转移,这可以称之为“趋同1”;另一个是在科学动... 详细信息

在科学动力学研究中,有两种趋同:一个是在上世纪中叶,西方科学哲学界对科学哲学的本性是科学动力学这一点有了普遍的认同,而俄(苏)自然科学哲学研究也几乎同步地发生了向科学动力学的重心转移,这可以称之为“趋同1”;另一个是在科学动力学中,新旧理论的一致性或会聚问题,不约而同地成为西方和俄(苏)科学哲学共同的理论热点,这可以称之为“趋同2”。这是比较科学哲学研究的一个突出案例。

关键词：科学哲学科学动力学趋同